Bill Heigis is a contractor who collaborates with Hobie Guion on building projects in central Vermont. Bill holds degrees in environmental studies from the University of Vermont and in environmental engineering from Rensselaer Polytechnic Institute; Hobie has degrees in architecture and building technology from Vermont Technical College. Both have an abiding interest in energy efficiency and green building; they have worked on everything from Earthships to straw-bale, timber-frame, and stick-built homes. Although they enjoy the challenges of designing and engineering, they still wear their tool belts most days.